A Core deposit is a form of deposit you pay until returning your old part. If you don't have the core at the time of purchase, you must pay the core charge. That charge is refunded to you when you return the core.
B'laster Small Engine Tune-Up is formulated to assist in the preventative maintenance of all two and four-cycle combustion engines. It dissipates moisture and inhibits rust and frees rings and valves, restoring compression, power and vacuum.